clear
hazy light brown
hazy light blue
hazy light grey
第1题：
Immediately after any diesel engine is started, the engineer should check the ______.
A.crankcase pressure
B.lube oil pressure
C.saltwater pressure
D.exhaust temperature
第2题：
stop the engine immediately to prevent damage
increase lube oil pressure
slow the engine allowing it to gradually cool
decrease the cooling water it temperature to the water jacket
第3题：
A water jacket is placed around the exhaust manifolds of propulsion diesel enginesto( ).
A.reduce heat radiation to the engine room
B.aid in preventing turbocharger overheating
C.condense and drain moisture from exhaust gases
D.dampen exhaust gas pulsations in the manifold
第4题：
Leaking seal ring
Insufficient heat transfer from the exhaust valves
Block cooling water passages to the head
Excessive scavenging air provided to the engine
第5题：
the engine is overloaded
the engine is cold
there is too much lube oil in the cylinders
the turbocharger is fouled
第6题：
natural aspiration
masked intake valves
air cells
scavenging air
第7题：
reduce heat radiation to the engine room
aid in preventing turbocharger overheating
condense and drain moisture from exhaust gases
dampen exhaust gas pulsations in the manifold
第8题：
A dry-type spark arrestor removes sparks from a diesel engine exhaust by ____.
A.increasing the linear velocity of the exhaust gases
B.changing directions of exhaust gas flow
C.decreasing the temperature of the exhaust gases
D.accelerating the exhaust gas through a reduced size orifice
第9题：
passing the exhaust through long head pipes
diffusing exhaust vibrations through activated carbon baffles
increasing the exhaust gas velocity
reducing the exhaust gas velocity
第10题：
high exhaust temperature
high lube oil temperature
low turbo-charger speed
low cooling water temperature